Challenger MT645
Power
200 hp[P] hp
Production
2002-2003
Engine
Turbocharged aftercooled diesel, 6-cylinder
Transmission
Power shift
Weight
19000 lbs [8618 kg]
Drive
4WD
From the same series:
Introduction
Challenger MT645 Agricultural Tractor
The Challenger MT645 is a high-capacity row-crop tractor produced between 2002 and 2003 by AGCO in Beauvais, France. Designed for heavy-duty field operations, it shares significant technical commonalities with the Massey Ferguson 8260, offering a robust platform for professional agricultural tasks.
Engine and Performance
The tractor is powered by a Sisu 6-cylinder liquid-cooled diesel engine with a 7.4-liter displacement. It utilizes a turbocharged and aftercooled induction system to deliver a rated power of 200 hp at 2200 RPM. The engine features a 16.5:1 compression ratio and is supported by a dual-element air cleaner to ensure longevity in dusty field conditions.
Transmission and Drivetrain
The MT645 is equipped with a power shift transmission providing 18 forward and 6 reverse gears. Power is managed through an electro-hydraulic wet disc clutch, facilitating smooth transitions under load. The machine features a four-wheel-drive system, power steering, and hydraulic wet disc brakes for reliable control and traction.
Hydraulics and PTO
The hydraulic system is a closed-center, pressure flow compensated (PFC) setup, delivering a total flow of 29 gpm (109.8 lpm) at a pressure of 2900 psi. It is equipped with four valves to operate various implements. The rear PTO is an independent unit operating at 1000 RPM, achieving its rated speed at an engine speed of 2091 RPM.
Dimensions and Hitch
The tractor has a wheelbase of 307 cm and a shipping weight of 8618 kg. It is configured for heavy-duty implements with a Category III rear hitch, capable of lifting up to 18400 lbs (8346 kg). The operator environment consists of a standard cab equipped with air conditioning to enhance comfort during long operational hours.
Conclusion
The Challenger MT645 is a reliable, high-torque tractor tailored for demanding row-crop applications. Its combination of a powerful Sisu engine, sophisticated PFC hydraulics, and a heavy-duty hitch makes it a suitable machine for professional farmers requiring consistent performance and durability in the field.
Production Information of Challenger, MT645
- The Challenger MT645 is similar to the Massey Ferguson 8260.
- Row-Crop tractor
- Built in Beauvais, France
| Manufacturer | Challenger (a part of AGCO) |
|---|
Dimension and Tires Information of Challenger, MT645
| Wheelbase | 121 inches [307 cm] |
|---|---|
| Shipping weight | 19000 lbs [8618 kg] |
| Height (cab) | 121 inches [307 cm] |
| Length | 203 inches [515 cm] |
| Width | 98.2 inches [249 cm] |
Minimum width
| Ag front | 14.9R30 |
|---|---|
| Ag rear | 18.4R42 |
Engine Specifications of Challenger, MT645
- Sisu
- Liquid-cooled vertical
- Turbocharged aftercooled diesel
- 6-cylinder
| Air cleaner | Dual paper elements |
|---|---|
| Displacement | 449 ci [7.4 L] |
| Compression | 16.5:1 |
| Bore/Stroke | 4.251x5.278 inches [108 x 134 mm] |
| Starter volts | 12 |
| Rated RPM | 2200 |
Transmission Information of Challenger, MT645
Transmission variants 1
| Type | Power shift |
|---|---|
| Gears | 18 forward and 6 reverse |
| Clutch | Electro-hydraulic wet disc |
Mechanical Specs of Challenger, MT645
- Four-wheel drive
- Cab standard with air-conditioning.
- Power steering
- Hydraulic wet disc brakes
Power Information of Challenger, MT645
| Rear PTO | Independent |
|---|---|
| Rear PTO Type | 1000 |
| Engine RPM | 1000@2091 |
Hydraulics Specifications of Challenger, MT645
| Type | Closed center pressure flow compensated (PFC) |
|---|---|
| Type(optional) | 39 gpm [147.6 lpm] |
| Total flow | 29 gpm [109.8 lpm] |
| Pressure | 2900 psi [200.0 bar] |
| Valves | 4 |
Three-Point Hitch of Challenger, MT645
| Rear Type | III |
|---|---|
| Rear lift (at 24"/610mm) | 18400 lbs [8346 kg] |
Electrical System of Challenger, MT645
| Ground | Negative |
|---|---|
| Charging system | Alternator |
| Battery volts | 12 |
Where it sits
With 200 hp[P] HP, the Challenger MT645 sits between MT635 (177 HP) and MT655 (222 HP) in Challenger's range. Its power puts it in the 87th percentile of 2000s models in our database (2822 machines).
Frequently asked questions
How much horsepower does the Challenger MT645 have?
The Challenger MT645 delivers 200 hp[P] HP.
What years was the Challenger MT645 produced?
The Challenger MT645 was produced in 2002-2003.
What engine does the Challenger MT645 have?
The Challenger MT645 is powered by a Turbocharged aftercooled diesel, 6-cylinder engine.
What transmission does the Challenger MT645 use?
The Challenger MT645 uses a Power shift transmission.
How much does the Challenger MT645 weigh?
The Challenger MT645 weighs 19000 lbs [8618 kg].
Is the Challenger MT645 4WD?
The Challenger MT645 is available in 4WD.